Manley Chrysler 6.4L Hemi 1.75cc Dome 4.090in Bore 3.724in Stroke 11:1 CR Piston Set - Extreme Duty

Starting with 2618 alloy forgings, these Manley Extreme Duty pistons are built for serious performance in your Chrysler 6.4L Hemi engine. They feature a 4.090-inch bore and a 1.75cc dome, designed to achieve an 11:1 compression ratio. This setup is ideal for builders looking for a well-built piston that can handle demanding conditions.

Manley uses domestic 2618 alloy forgings, which are known for their strength and ability to perform under high stress. The pistons also come with premium chrome moly wrist pins for added durability, and for some part numbers, upgrades to even tougher alloys are available. The ring lands and grooves are machined to strict standards, which helps ensure a better seal for your piston rings, leading to more power. You'll also find that these pistons have specific cam and barrel profiles on the skirts. This design helps generate power while also being easier on your cylinder walls, contributing to a longer engine life.

A notable aspect of Manley's manufacturing process is their unique fixturing. This allows them to machine the skirt and cut the ring grooves in a single operation. This ensures the ring grooves are perfectly square to the piston skirt, which is critical for optimal ring seal and overall engine performance. These pistons are a solid option for anyone rebuilding a 6.4L Hemi and looking for a strong, reliable component.